Trimming machine



Feb, 24, 1931.

.J2 B. l-,IADAWAY TRIMMING MACHINE Filed May 9, 1929 2 Sheets-Sheet l Feb. 24, 1931. JfB, HADAWAY" 1,793,481

TRIMMING MACHINE 2 She'ts-Sheet 2 Filed May 9' 1929 NVENTUR JOHNn. HADAWAYQ'OF sWAMPscorT,massacnusnrrs, AssieNon TOUNITED sri-10E" or Parme-SON, vNEW amasar', A CORPORATION OFQNEW l' Patented Feb. 24, 1931 Y imam UNITED `fs'rA'lfSIPATENT.)OFFICE 1.l

MACHINERY CORPORATION, JERSEY Application med May ,a `1929. seriaiNa 361ml.

This linvention relates to trimming machines and is herein illustrated as embodied 1n a machine designed to operate on lasted "shoe'sin which the overdrawn margins of 5 upper material lie in confronting relation to the'insoles and are securedthereto sov that surplus portions of said margins may beV severed.y Y A v In shoes of certain types the margins referrel to extend inwardly beyond the holding means by which they are secured tothe insoles, the unsecured portions inside the lines of connection being surplusage after completion of the lasting operation; Consequently, it is common to trim these unse- With regard to these conditions anV object Y of the present invention is'to Vprovide Van improved machine adapted' to ltrim margins 'of the character above described, with a view to rapidity and ease of Operation. p j

vAccordingly a 'feature Vof the invention consists in a machine comprising a movable v shear 'member' formed and arrangedto'run between the insole of alasted Shoe and an overdrawn marginof upper material confronting the insole, mechanism by which said member is operatedto flex said margin away fromV the insole, and vmeans arranged to c0- operate with said member to sever saidmarv gin with 'aA shearing cut. Preferably, and

as shown herein, the other member of the shearing-couplealso executes shearing movement, and itsflines of movement preferably cross those of the Ashear member that runs between the insole and thef 'overdrawn mar-1.v

gin of upper material. ,Thus, the dissimilar movements of the` shear members produce a draw cutwhich facilitates the severing,` more especially when relatively thickor vhard materials" are encountered, as, for example, seams, toe-stiffeners, pleats at-theI-toe end'A of a shoe, and the flanges ofcounter-stiffeners which commonly lie between the up-` pers andlinings.- However, in itsbroad jaspect,the invention does require movement of the shear member that operateslagainst the outer-surface vof an overdrawn margin.-

Referring tothe shearmembercthat oper-k :ates between theinsole and an overdrawn TRIMMING Maron-LINE" f repeated-thrusts due to suchreciprocation. cured portions wherever theyare too wide.

margin, `satisfactoryresults havey beenvobtained with a reciprocatory blade provided i with 'ae/pointed, wedge-shaped portion having a shearing edge slightly inclined'- with respect to 4the lines` of reciprocation impart-- ed thereto.- Thus, as this member moves point foremost in lines substantially parallel material of an overdrawn A"margin away rom the insole,"its rate of reciprocation beingV suficiently rapid t-o takead'vantage ofY the lnertia of a shoe so that 'no appreciable tothe shearing cut its shearing edge operates i' with a wedging' actioiito.` deflectfsurv lus e manual eort'will be required tol resist the As herein illustratedv tlieabove-mentioned pointed bladegisfadjustably clampedfin a A holder so that it may be advanced, from time to time, as it grows shorter in consequence of terial bears as thetrimming progresses, the

groove being eective both to. facilitateA the feeding ofthe work and the sharpeningof the cutter. With respect to fac'ilitatii'igthey feedingof the work, the groove is-arrangedY to `receive -v an edgel of the material ytrimmed the blades, thereby diminishing the extent off-lateral defiection o-f-the materialsoV that the work Vmay; be fed with lless opposition than if the deflectionv were "commensurate with the maximum thickness of the Vblade'. y

Vith respect to facilitating sharpeningthe fsu blade,the yaforesaid ,g'roove-di1ninshes7the burden-on an abrading lelement by which 'the 'i blade issharpened.. y Still another object-of provide improved and simplified mechanism for operating a pairlofk cooperativeshear members organized to 'operate as" abovede- C vsci'iibedlm'lo this enda lfeature ofthe inven- Y f tion co'nsistsm a novel combination comprismg a pair of reciprocatory shear members co-fA operatively related, and mechanismy arranged i v to operate the-m, one' withv relatively Vlong strokes and the other Vwithrelatively short strokes;Vv 'As herein -illustrated, the shear members both receive operating motionfrom a common operating member, but the motion for one of them is transmitted by a toggle link which increases its power and reducesv Vmachine being at the right of the figure;

shown in Fig. l;

. Fig. 2 is a vertical section, on a larger scale,

including the trimming cutters and a portion of a lasted shoe in process of being trimmed;

Fig. 3 is afront elevation, partly insection, of the upper portion of themachine Fig. 4 is a section, on a larger scale, vof the elements intersect'ed by broken line lV-IV of'Fig. 3;

A Fig. 5 is aperspectiveView of a portion ofY a lasted-shoe inprocess of being trimmed, and includes'fragments ofthe'cutters inthe act of executing a shearing cut; and

Y Fig. 6 is a ers ective view of a` Jortion n L i Y l of one of the shearing cutters.

. Figs. 2 and illustrate a typicalfexamp-le of alasted shoe in which the overdrawn margms of .upper material lie on the bottom, face of the insole and require trimmingin the shank portion ofthe shoe to provide a channel for the reception of a shanlt-stiener.V f i In accordance with the procedure followed in the manufacture ofa shoe of the type shown, Fig.- 2illustratesa portion of a last 10, the bottomface ofwhich (the last being inverted in this figure) is shod with a metal plate 12. Y For the purposes of this description the upper 14 andthe lining l6 (with or without a toe-stiffener. and a counter-stiffener) will j be hereinafter referredto collectively as the upper material. Y, ln thecourse of lasting the shoe, the overdrawn margins 18 `of the upper K material `are laid upon tliebottom face of the insole 2O and are'securedtheretoby any suit.- able means, ,for example,y fasteners, herein represented as lasting tacks 22. ,As the tacks `'are driventlirounh the u )er and the insole o Y i their points encounter the metal plate'l2fandV are turned back `andclenclied in theinsole. Itis to be observed that ina shoe ofthe type illustrated, the bottom face of the insole is plain, that is, not interruptedby any shoulder or rib. Thus, when the overdrawn margins are secured to the insole they lie in confronting relationto the bottom face thereof. j

AAccording toy common practice, the illustrated .upper and lining are initially Ycut to provide surplus material by which the grippers of a lasting'apparatus may maintain :a suihcient hold upon the margins i8 while `the upper material is being shaped and while the margins are being secured to the insole. Subsequently, it is desirable and commonly necessary to sever some of this surplus material, particularly in the shank portion to provide a channel for a shank-stiener, and also at the toe of the shoe where the overdrawn margin 18 is commonly pleated incidentally to shaping the upper to the toe of the last.

Themachine hereinafter described is useful to trimsurplus material from the margins 18'not only along the shank portion of a shoe but' also along the sides ofthe forepart and around the toe thereof, the extent of trimming, in each instance, being determined by the-trimming operator according to the quantity of surplus material lying inside the line of connection between the margins and the insole.

The illustrated machine comprises a head -or frame 24 mounted upon a supporting column26, an overhanging portion 28 of the frame is 'provided with a depending arm 30, the lower end of which is bored horizontally for the reception of a pivot pin 32. The ends of this pin project beyond-the arm sufiiciently'to extend through two branches 34 of a holder in which a flat cutting blade 36'is adjustably clampedby a plate 38 and two clampingbolts 40, asshown in'Fig. 4. Mechanism hereinafter described is provided to ,oscillat'e this blade-holder about the axis ofthepin32. The blade- 36. is preferably of arcuate shape as shown in Figs.Y 3 and, the curvatures. off its inner and vouter surfaces being concentric. .Corresponding 'e arcuate shapesare give'nto Vthe'clamping plate 38 and to the clampingi portions of the bladeholder, specifically theflat kbed portion 42 and the flange 44 thereof. The abutting surfacesofthe blade -36 and the clamping-plate 38 are beveled as illustrated inFig. 4 so that when the plate is set up tightly by the bolts l4() it will exercise two components of clamping pressure by one of which the *outer curvedsurface of theblade 36 will be clamped against-the'flange-44and by theother of which-a Aflat/face of the blade Willfbe clamped against the'flat-bed 42. f The described Clamping means .provides forfadjusting the blade lengthwise ofits'lines ofcurvat'ureto compensate forreductions infits.lengthfas it is ground, from time to time, to sharpen its shearing edge.

- -As shown'inFigs. 3-and'6,th`e innermargin j ofthe-blade 36 is ground away to provide a narrow wedge-shaped pilot or projection 46 VVforming acOntinuatiOnl of the outcur'ved Vmargin, and to provide on said projection n-a shearingl edge 50` Vextending lengthwise thereof andrfacing the axis of the'pin 32 ,but slightly inclinedg When the blade 36 is adjusted asshown in Figs. 3and5.,v the projection 46 lies under the axis of the pivot pin32'so that as thebladeis oscillated, as hereinafter described, ythe projection-will move lengthwise in lines approximately par- A the chip or trimming 52 of waste material,

. formed on'the bladeeholder 42, a link 56,

' allelto the confronting surfaces of the insole and a margin 18 of a shoe. Thus, the

outcurve'd bottom surface of the projection 46 is arranged to runon the upturned .sur-

nnparting any appreciable deflection to the shoe, While the inclined shearing edge 50 bends Ythe surplus upper material upwardly withsuccessive wedging actions. `The tip penetratethe materials ofwhiehV shoe is between the insoleV and anyjoverdrawn margin 18 of the upper. j

' A groove v48 vis preferably -fo'rmedin the -body of. the' blade 36 inthe fiat face oppositethat on which the shearing edge 50l is formed, said 'groove extending lengthwise of theiblade and'its forward endpbeing about in line with the shearing edge 50rto receive as illustrated in Figs. 2 and 5. The body of the blade runs in the cut formed in the work and deflects thevchip 52 laterally, :but the Vabruptness of such ydeiiection is modified by the groove, withthe result that less effort is required to feed the work thanV if the fullthickness of' thev blade were kmaintained at the point of deflection. Moreover, as the blade is ground back incidentally to sharpeningt'he shearinfr edge 50, the burden upon the grinding element is correspondingly lessened by the groove. Y'

The illustrated mechanism for reciprocating the blade 36 includes an larm 54 (Fig. 8')

the ends of which are pivotally connected respectively to the arm 54 and to a block.

'58', a vertically movable plunger. 6() to which F40 the block 58 is affixed, a connecting rod-62 pivotally connected to the block 58; and aneccentric'wrist-pin 64 carriedby an operat ing shaft 66. Y The shaft is'mo'untedinbearings .in the frameV 24 ,and .is provided with a tight pulley A68 and a loose pulley 70 on which a driving belt may run. A shipperl 72 is'provided for shiftingthe belt back and forth from one `pulley to theother. rhe

plunger' 60 isarranged in bearings 74 in the overhanging portion 28 ofthe frame andprol jects below said portion to provide a mounting for a vertically movable flat chisel-shaped shearing-blade hereinafter described. l As shown in Fig. 3, the plunger '60 isat the "'v rupper limit of its stroke and the pivot Vpin 57 connecting the link "56 andthe block 58 is slightly above the level ofthe pivotV pin 55 connecting the link and the arm 54. Thus, as the plunger 60 descendsto impart a cutting stroke to the blade'76 it also impartsarelaf; tively'slight angular motion.tothearm 54,

the action `ofthelink 56 being that of a toggle member.V As this-motion takes place,

the projection 46at the lowerend of the` blade 3 6 moves point foremost in lines crossface of the insole of a lasted shoe-"without ofthe vprojection 46 is not sharp enoughv tol made but is pointed enough to enter readilyV ing the lines of reciprocation Vof, the blade 76, .althoughits extent of motion is smal] .compared to the extent of'motion imparted tothe blade 76.5"l lf, w-hen .thisl motion occurs, the projection46l liesbetween two elements of the lworksuch `as'the insole and an overdrawn margin 18 of the upper of a lasted shoe the shearingxedge 510 will lift the overlying material with a wedging "action-and atfthe saine time the shear membersl will execute a draw cut.V

The flower end of thejblade 7 is sharpened f Y to forma chisel-like shearing edge indicated at 78Iin Fig. 2, this'edge Ybeing arranged to moveto and fro across the shearing edge 50 and to cooperate therewith. Preferably, and.

as' showmthe shearing edge 7 8 is curved to provide a substantially- \/.shaped gap between the blades when the blade .76 is raised, this gapV being indicated at v8O- in Fig. l8.V The blade 86 is soadjusted that yits bod-y portion 76fand thus maintain the shearingrelation of the shearing edges 50 'and 78." f 7 f Referring to Fig. 2, the blade 7 6 is clamped Y rigidly toa holder 82 and is mortised there'- f will always be in lapped relation to theA blade n in as shown in Fig. 4.` "The ,connectionis formed-by a bolt 84, a vertical notch 86 being formed in ther blade to receive the shank of the bolt and to provide for vertical adjust'.- ment of the blade 7 8 so that' its shearing edge will travel across the shearing edgev 5() but not descend to thelevel of the bottom of thel projection 46. The holder 82 is 'carried by the plunger 60 and is connected thereto lby Va horizontal hinge-pin 8.8 which enablesthe blade 7 6 to `bear continually against the blade 36 notwithstanding anyloose play, of` theA 'I 'l parts that may develop infth'e use Vof themachine. A leaf-spring kQ Ois arranged-to main tain pressure ofthe blade 7 6 agains'tthe blade 3.6 and 'is provided .with a thumb-screw-.92 by'vv Y 'I which the; applied-force ofsuch pressure may be regulated.. The springg() is'providedwith. l 'i 'i vears 94l that 'straddle thelower'en'd yof the plunger 60. YThese ears are-bored for the receptionof'the ends of the hinge-pin 88 by which the springis carried. .The regulating screw 92 is carried by the plunger 60 and eX- tends through a. notch 96 formed inthe v jectionV 46 between the insole andthe surplus` material about to be trimmed!v Thersurplus material thus enters the gap80 (Fig. 3)-, and

as the operator advances thek shoe manually.

the blade 7 6, which isreciprocated at a'high rate of speed across Athe shearing edgeVv 56, f trims the margin as'illustratedvin F igs; 2 and .15.Y During the progress ofthe trimming, vthe l low-erfedge of the projection 46 guides; .the

shoe by vengagement with the insole andthus prevents the insole from touching the blade 76. At the same time, the projection 46, being reciprocated lengthwise in Vlines crossing the,

lines of reciprocation of vthe bladeV 7.6, de

Afleets the surplus material upwardly without requiring any appreciable effort onA the part of th-e operator to feed the shoe,since the inertia of the shoe' and the lasten which it is formed is sufficient to counteract the short rapid thrusts of the 'projection 46 and the friction due to its engagement with the insole and with the materials being trimmed.

The facility with which the work may be fed as a i'esult'of the rapidreciprocations imparted to the projection a6 is of considerable advantage in speeding up the work and in relieving the operator from fatigue.

lVhile these recprocations are advantageous,

even when only the upper la and the lining 16 of a 'shoe are being trimmed, they are more especially so when the shear members encounter seams, pleats, toestiifeners or the forward extremities ofthe heel-seat-flange 19 (see Fig. 5) of a counter-stiffener, which eX- tremities commonly project into the area to be occupied by a shank-stiffener.

' Having thus described my invention, what Y I claim as new and desire to secure by Let- Cil ters Patent of the United States is:

l.- A trimming machine coinprisinga movable shear member formed and arranged to run between the-insole of a lasted shoe and an overdrawn margin ofnpper material confronting the insole. 'mechanism by which said member is operatedzto :tieni said margin away from the insole, andineansv` arranged to cooperate. with said memberrto sever the mai'-`Y gin with a shearing cut.

ing portion formedand arranged to run between the insole of a lasted shoe andanoverdrawn margin of. upper. material confronting the insole, mechanism arranged to reciprocate said member so that said shearingportion willmove to rand'fro in lines approximately parallel to the confronting surfaces of the insole* and said 'margim and iliower-driven `means arranged to cooperate with' said wedge-shaped portion-to sever the margin -with a shearing cut.

i Y e 4l. A trimming machine comprising' a pair f of shear members-cooperatively related to sever surplus material from an overdrev-(n margin of upper material confronting theinsole of a lasted shoe, one of said members heilig formed and arranged to function be- `Vtween said margin and the insole and having an outcurved surface to run on the insole, and

mechanism by which, said one of the shear members isoperated with to-and-Lfio movements lengthwise of the trimming cut.

5. A. trimming machine comprising two movable shear members cooperatively 're-.

lated,one of which is pointed and arranged to run point-foremost between an article `of work and a layer of sheet material lying on a surface of suoli article, mechanism arranged to operate the other one of said shear members to 'sever said sheet material, v'and nieansari'anged to reciprocate saidpointed shear member in lines substantially parallel to the shearing cut to deiiect the sheet'material from said surface of the article of work.

6. A trimming machine comprising two v movable shear members cooperatively'related, one of which is arranged torun between tlie insole and theoverdrawn margin of the upper of a. 'lasted shoe, mechanism arranged to operate the other one ofsaid members to sever said margin, and mechanism ai"- ranged to reciprocate the iirstsaid one ofsaid members in lines substantially parallel to the shearing cut to facilitate, feeding the work.

7. A trimming machine comprising a pair of movable shear members cooperatively re'- lated and arranged to'seversurplus material from an ovei'drawn marginof upper material confronting the insole of a lasted slice, and mechanism arranged'- to operate said members, one lof said members being ar- V ranged and operated to moveto andl fr'o between said margin andthe insole to separate them and thereby facilitate the feedingsof the y 8. A trimming machine comprising `two reiprocatoryshear blades cooperatively related,mechaiiism arranged to reciprocate one of said blades across the shearing edge of the otheigand mechanism arranged to reciprocatev said otherV one. of the bladesac'ross the lines ofV reciprocatioiiimparted to Atheffiist said one of the'bladesand during the cutting strokes thereof,` whereby a drawrshearin g c ut is eected.V n Y I y 9. A [trimming machine comprising two movable shear vblades cooperatively related, one of said blades having a pointed wedgeshaped'portion'arranged `to run between the insolegof a lastedshoe and surplus mate' rial lying onthe` surface of the insolejsaid portion having an outcurved surface to en-` gage the insole and a shearing edge to engage thesurplus material, mechanism ar!r `rangedtoreoiprocate the otherV one ofsaid blades 'in lines crossingsaid slicaringedge,

and mechanism arranged toreciprocate the Y firstsaidone of theblades in lines crossing the aforesaid lines.:l

ranged to reciprocate said one of said blades lengthwise of said projection, and mechanism arranged 'to operate the other one of said blades'with a shearing` movement across said shearing edge.

11. A trimming machine comprising two cooperatively related shear blades one of which is provided with a pointed projection arranged to run point foremost between two confronting elements of an article of work,

saidV projection having a shearing edge eX- tending lengthwise thereof, mechanism arranged to reciprocate said one of said blades in lines lengthwise of said projection, and mechanism arranged to reciprocate the lother one of said blades across said lines.

12. A trimmingy machine comprising two cooperatively related shear blades one of which is provided with a'pointed projection arranged to run point foremost between two confronting elements of an article of work, said projection having a shearing edge eX- tending lengthwise thereof, mechanism arranged to reciprocate said one of said blades in :lines lengthwise ofsaidprojection, and

mechanism arranged to reciprocate the otherV one of said blades across said lines, said two mechanisms being interconnected and timed to synchronize the reciprocations of' the blades.

13. A trimming machine comprising a reciprocatory carrier, two cooperatively related shear blades one of which is carried by said carrierA and provided with a shearing edge extending across its lines of reciprocation, mechanism arranged to reciprocate said carrier, and mechanism operated by said carrier to reciprocate the other one of said blades across said lines of reciprocation.

14. A trimming machine comprising a pair of cooperatively7 related shear blades, mechanism arranged to reciprocate one 'of said blades in lines crossing the shearing edges of the blades, and mechanism arranged to reciprocate the other one of said blades so that its cutting portion will move across said lines, the shearing edge of said other one being inclined with respect to its lines of movement.

15. A trimming machine comprising a pair of reciprocatory shear members cooperatively related, and mechanism arranged to operate said members one with relatively long strokes across the line of the cut and the other with relatively short strokes lengthwise of Y the cut. v

16. A trimming machine comprising a pair of reciprocatory shear members cooperatively related and arranged to execute a draw shearing cut, and mechanismarranged Yto operate said members one with'relatively longj strokes andthe other withV 'relatively short strokes crosswise of the lines of said lon strokes. v e 1 A trimming machine comprising a pair of shear members cooperatively related, one Vofsaid niembersbeing constrainedto oscillate about an axis and the other-.beingconstrained Y to move in; lines transverse to said axis, and

mechanism arranged to operate said members one with relatively long strokes and theotllllf with relatively short strokes.V

18. A trimming machine comprising a pair of shear members cooperatively related, one of said members being constrained to oscillate about an axis and the otherbeing constrained to move in lines transverse to saidaX-is, a rotary eccentric operating member, and IneaIlS actuated by said eccentric member for imparting' relatively shortl andrelatively longv operating. strokes to saidshear members re- Spetively;

19. A trimming 'machine comprising two reciprocatory members, shear blades cooperativelyrelated and carried by said members respectively, mechanism arranged to reciprocate one of said members, and a toggle link connecting .said members-to impart, recipro-V vcations of relatively small amplitude `top-the other one of said members. .s

- 20,. .A trimming machine comprising a pairv 'of shear blades cooperatively related, mechanism arranged to reciprocate one of saidl blades in lines crosswise of the shearin cut, and ak toggle link connecting .saidbla es to reciprocate the other one of them, said other one being arrangedto cause :its cutting por'- tion to move l.in lines crossing the Vfirst .said lines. if 'iy 21. A trimming machine comprising two reciprocatory 'blade-holders,` means connectsaid holders to transmit reciprocatoryymoti'o'n from .one to the other and to synchron'me theirmotions, mechanism arranged to rec-ip-V rocate oneof said holders, and av pair of shear blades carried by said holders respectively in cooperative shearing relation, .saidholders being arranged to cause the Ishearing portions of the blades to move in lines substantially atright angles to each other. i 22. A `trimming I'nachine'l comprising an arcuate blade arranged to be oscillated about an axis and having a shearing yedge facing said axis', a chisel-shaped blade arrangedv in shearing relation .to said ,arcuate blade, mechanism arranged to reciprocate said chiselshaped blade so thatV its cutting edgewill moveto and fro across said` shearing edge of the arcuateblade, and mechanism arranged to oscillate said arcuate blade about saidaXis. 23. A trimming machine comprisinga pair of reciprocatory shear members arranged to sever surplus material froman over-drawn margin Vof upper ymaterial lying on the insole susk of a lasted shoe,` oneof said? members being formed to run `between said margin and the insole and being constrained to oscillate about an axis, and mechanism arranged to operate said shearV members 4so that their cutting portions 'Will mover-substantially at'right angles to eac-h other While cutting. j 1 24. A trimming machinecomprising two Y reciprocatory` blade-holders one owhich is constrained to move in right lines ,and the other to oscillate about an aXis, cooperative shear blades carried by said holders reblade having a cutting portion provided With a shearing edge, a body portionin line with said edge, and a groove in thebody portion to receive an edge of the material trimmed by said cutting portion, said shearing edge and said groove'bei-ng on opposite sidesof the blade.

In testimony whereof I have signed my name-to this speciiication. A.

JOHN B. HADAWAY.

spectively, means arranged to reciprocate one Y.

of said holders, and means connecting said holders :to transmit operative motion from one to the other.

25. Al trimming machinecomprising two reciprocatory blade-holders one of which is constrained to move in right lilies and the other to oscillate about an axis, Vcooperative shear blades carriedby said holders respecedge in shearing relation to said chisel-shaped blade, said blades being arranged to execute a draw shearing cut, and a link connecting said plunger and said blade-holder to impart operative motions to the latter.

' 27. A trimming machine comprising a reciprocatory member, a shearing blade carried thereby, a hinge-pin connecting said blade and said member, means cooperatively re- 'lated to said blade to form a shearing couple,

a spring pivotally mounted on said hingep in to maintain said blade against said means,

and an adjustable device engaging said reciprocatory member to regulate the applied force of said spring against saidblade.

' 28. A trimming machine comprising tWo relatively movable shearing members one of Which consists of a blade having a cutting portion provided with a shearing edge,

afbody portion in line Wit-h saidvledge, and a groove in the body portionto receive an edge of the material trimmed by said members.

29. A trimming machine comprising vtWo relatively movable shearing members one of Which consists of a blade having a cutting portion provided WithY a shearing edge, a body portion in line with said edge, and a groove in the body portion to receive an edge 'of the material trimmed by said members, said edge and said groove being on opposite sides of the blade.

30. A blade for a shearing machine, the 

